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Table 2 Inter-observer and intra-observer intraclass correlation coefficients for all sagittal alignment parameters

From: Should adjacent asymptomatic lumbar disc herniation of L5-S1 isthmic spondylolisthesis be simultaneously rectified? Evaluation of postoperative spino-pelvic sagittal balance and functional outcomes

 

Inter-observer intraclass correlation coefficients (ICC)

Intra-observer intraclass correlation coefficients (ICC)

 

Pre

(95%CI)

1 months

(95%CI)

1 year

(95%CI)

Final

(95%CI)

Pre

(95%CI)

1 months

(95%CI)

1 year

(95%CI)

Final

(95%CI)

SL

0.98(0.97,0.99)

1.00(1.00,1.00)

0.99(0.99,1.00)

1.00(1.00,1.00)

0.95(0.92,0.97)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

LL

0.98(0.98,0.99)

1.00(1.00,1.00)

0.99(0.99,0.99)

0.99(0.98,0.99)

0.95(0.93,0.97)

0.99(0.99,0.99)

0.97(0.96,0.98)

0.96(0.95,0.97)

PI

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

PT

1.00(1.00,1.00)

0.99(0.98,0.99)

1.00(1.00,1.00)

0.98(0.97,0.99)

0.99(0.99,1.00)

0.97(0.96,0.98)

1.00(1.00,1.00)

0.96(0.93,0.97)

SS

0.94(0.93,0.96)

0.99(0.99,1.00)

0.97(0.95,0.99)

1.00(1.00,1.00)

0.95(0.94,0.97)

0.98(0.97,0.99)

0.98(0.98,0.99)

1.00(1.00,1.00)

SD

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

1.00(1.00,1.00)

  1. SL Segmental lordosis, LL Lumbar lordosis, SS Sacral slope, PT Pelvic tilt, PI Pelvic incidence, SD Slip degree, Pre preoperative